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CANBERRA Cheap Supreme Air Force 1 High UK , May 28 (Xinhua) -- An international team of scientists studying ultrafast physics have solved a mystery of quantum mechanics, and found that quantum tunneling is an instantaneous process, the Australian National University said in a press release on Thursday.


The new theory could lead to faster and smaller electronic components, for which quantum tunneling is a significant factor. It will also lead to a better understanding of diverse areas such as electron microscopy Cheap Special Field Air Force 1 UK , nuclear fusion and DNA mutations.


"Timescales this short have never been explored before. It's an entirely new world," said Professor Anatoli Kheifets from The Australian National University (ANU) who is a member of the international team.


At very small scales quantum physics shows that particles such as electrons have wave-like properties and their exact position is not well defined, meaning that they can occasionally sneak through apparently impenetrable barriers, a phenomenon called quantum tunneling.


Quantum tunneling plays a role in a number of phenomena Cheap Lunar Force 1 UK , such as nuclear fusion in the sun, scanning tunneling microscopy and flash memory for computers. However, the leakage of particles also limits the miniaturization of electronic components.


Professor Kheifets and Dr. Igor Ivanov, from the ANU Research School of Physics and Engineering Cheap Air Force 1 White Mid UK , are members of a team which studied ultrafast experiments at the attosecond scale (10-18 seconds), a field that has developed in the past 15 years.


Until their work, a number of attosecond phenomena could not be adequately explained, such as the time delay when a photon ionised an atom.


"At that timescale the time an electron takes to quantum tunnel out of an atom was thought to be significant. But the mathematics says the time during tunneling is imaginary Cheap Air Force 1 White Low UK , a complex number, which we realized meant it must be an instantaneous process," said Professor Kheifets.


"A very interesting paradox arises, because electron velocity during tunneling may become greater than the speed of light. However Cheap Air Force 1 White UK , this does not contradict the special theory of relativity, as the tunneling velocity is also imaginary," said Dr Ivanov, who has took up a position at the Center for Relativistic Laser Science in South Korea.


The team's calculations made using the Raijin supercomputer showed that the delay in photoionisation originates not from quantum tunneling but from the electric field of the nucleus attracting the escaping electron.


The results provide an accurate calibration for future attosecond-scale research Cheap Air Force 1 Off White UK , said Professor Kheifets.


"It's a good reference point for future experiments, such as studying proteins unfolding, or speeding up electrons in microchips," he said.


The research is published in Nature Physics journal.




TOKYO, Sept. 25 (Xinhua) -- Following is the result from the Pan Pacific Open women's tennis tournament here on Sunday:


Final


Caroline Wozniacki, Denmark, bt Naomi Osaka, Japan, 7-5, 6-3





DURBAN Cheap Air Force 1 Mid UK , April 26 (Xinhua) -- China is willing to deepen pragmatic cooperation with South Africa on women's affairs, said visiting Chinese Vice Premier Liu Yandong here on Wednesday.


Liu made the remarks at a ceremony where the All-China Women's Federation (ACWF) donated sewing machines to the African National Congress Women's League (ANCWL), the women's wing of the ruling African National Congress (ANC).


Noting that both China and South Africa are major developing countries and emerging market economies, Liu said enhanced bilateral cooperation will not only foster women's welfare in the two countries Cheap Air Force 1 Low Womens UK , but also is of great significance to greater global gender equality.


China will increase experience sharing with South Africa in women's universal education, public health, poverty reduction and equal employment, she said.


China hopes that more women will join China-South Africa people-to-people exchanges and contribute to the cause of women's empowerment in the world Cheap Air Force 1 Low Mens UK , she said.


At the donating ceremony, the South African side expressed that South African women cherish the friendship with Chinese sisters and hope to enhance cooperation with the Chinese side.


ANCWL President Bathabile Dlamini, South African Foreign Minister Maite Nkoana-Mashabane and some other officials attended the donating ceremony.




By Yoo Seungki


SEOUL, Oct. 27 (Xinhua) -- South Korean President Park Geun-hye's approval rating dropped to the lowest since her inauguration in February 2013 on mounting controversy over Choi Soon-sil, the president's longtime confidant suspected of intervening in state affairs.


Park's approval rating stood at 21.2 percent this week, down 7.3 percentage points from the previous week, a survey by a local pollster Realmeter showed on Thursday. The survey was conducted on 1,528 adults between Monday and Wednesday.


Wednesday's daily survey tumbled to 17.5 percent, marking the first time that the president's support rate fell below 20 percent.


The pollster said Park's approval rating posted the lowest in almost all of regions, ages and ideological preferences, noting that those in their 60s or older living in southeastern regions, a major base of support for Park, turned their backs severely.


Park's loss of key supporters came amid mounting controversy over Choi who has been at the center of a political scandal arising from the establishment of Mir and K-Sports foundations.


The foundations gained an unprecedentedly quick approval of their establishments, with tens of millions of U.S. dollars in donations coming from major conglomerates, including Samsung and Hyundai.


Choi was suspected of misusing the foundations and exerting her influence in order to gain business favors for her partners and preferable treatment for her daughter.


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